The mere thought of an Ironman is enough to make most people shake their heads. It takes years of dedication and sacrifice, a good dose of natural ability, and a bit of craziness. When you've done everything to get ready for that race, this is your racewear. Body Paint technology reduces seams to an absolute minimum, making it ideal for long-distance racing.

Made from an ultra lightweight Velocity Dry Fabric which is both well ventilated and flexible while still providing a very aerodynamic fit. A 1/2 zip fastening makes the jersey easy to get on and off and also offers good temperature regulation. High-capacity, yet aerodynamically optimized pockets give you plenty of storage for energy gels, bars and more importantly within easy reach so you can make sure you stay fully fueled at all times. The main feature that sets this apart from a standard jersey is the speed hook system that pairs two pieces of clothing together. This system allows the shorts to be attached easily and quickly to a Castelli top and keeps both garments in place.

Note: Please click on the above tabs for the Castelli size guide and technology guide.

Note: Castelli clothing is sized small, Tweeks Cycles recommend you select one size above normal for an athletic fit, or two sizes above if you prefer a more relaxed fit.

NB: Image for illustration purposes only

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Velocity Fabric For Ultra lightweight Yet Aerodynamic Comfort

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White Back To Reflect Heat

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Flar Arm-Hole Trim And Minimal Seams

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Speed Hooks To Hook To Any Castelli Tri Shorts

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1/2 Zip Fastening

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Sublimated Print Graphic

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Temperature Range: 17-37C / 62.6-98.6F

Despite being In existance as a clothing manufacturer since 1876, it wasn't until in the late 1940's that Castelli shot to fame with Fausto Coppi, Il Campionissimo (the champion of champions): One of the all time great post war cyclists, a five time winner of the Giro and twice holder of the yellow jersey in the Tour de France.

Armando Castelli was his tailor, and together they created the first silk cycling jersey, a lighter material designed to help when climbing in the alps. The following years saw Castelli create cycling clothing for nearly all the top riders to give them the same edge he had given Coppi; developing the skin suit, chamois, back pockets and zippered collars along the way.

Castelli Sport was founded in 1974 under the iconic scorpion logo to provide premium racing clothing to the next generation of riders, utilising space age (at the time) Lycra for the first time. Something that brought Merckx, Hinault and Moser through the door and gave rise to a new range of innovations derived from the demands of these legendary riders.

Today Castelli continue to build upon their heritage, supporting the champions of cycling by constantly reworking existing designs and materials to produce some of the finest clothing available.

Rosso Corsa
The Rosso Corsa label is only applied to the highest-level products Castelli make. Every thread and fiber, every curve and contour are obsessed about. Rosso Corsa represents a categorical breakthrough in cycling innovation and the meticulous craftsmanship you expect from Castelli's performance-enhancing apparel.

Vortex Fabric
Vortex dimpled fabric on legs for aero performance and muscle support without constricting.

Nano Flex
Exclusively engineered by Castelli. We take our thermal fleecy stretch Thermoflex fabric and coat it with millions of tiny nanofilaments to create the most water-repellent fabric finish ever. Drops of water stay as spherical balls on top of the fabric or bounce off the fabric without leaving a trace.

Affinity Lycra
Our standard shorts fabric will have you screaming comfort. 210 grams of outstanding stretch and rebound with a smooth semi-matte finish.

Stradapro 3D
100% polyester multidenier fabric. The 3D weave reduces contact area with your skin to provide excellent wicking. It dries in the blink of an eye and in fact is the ideal fabric for hot-weather racing.

Event
eVent waterproof fabric keeps you dry in wet conditions. It's waterproof outside while allowing perspiration to escape from the inside through millions of tiny pores. In fact, eVent is 30% more breathable than its closest competitor. eVent is the smartest choice for athletes who need and demand the highest possible performance and comfort from their apparel.

Prosecco Strada
ProSecco Strada is a major step forward in classic jersey fabric. Its controlled stretch allows designers to engineer a perfect fit. ProSecco hydropholic treatment helps keep you dryer and more comfortable than ever before.

Prosecco
A tropical hydrophilic treatment which causes water to spread out over a larger surface area allowing for quicker evaporation.

Warmer
Waremer is more than a name, it's exactly what the fabric delivers during workouts. Its fleecy inside keeps you warm, while 100% polyester fibers quickly wick sweat away. It's the fabric of choice when thermal insulation is qually important as moisture management.

Thermoflex
Thermoflex gives you a stretchy layer of cold-weather protection.Its fleecy inside traps a layer of warm ait next to your skin, while its high stretch gives you an aerodynamic fit.

Windstopper X-Lite
The highly stretchable indstopper X-Lite fabric moves naturally with your body and doesn't restrict movement. It also delivers unprecedented performance, with 100% wind protection, and up to ten times greater breathability compared to other windproof fabrics.

Prosecco 3D
ProSecco hydrophylic treatment speeds up evaporation by spreading moisture over a larger surface are within the fabric. The 3-D structure of the fabric holds the surface off the skin, improving wicking and reducing cling, keeping you dry and comfortable.

SG0.6 Wind
Using the technology of SG0.6, SG0.6 Wind sandwiches a wind membrane between two layers of SG0.6 fabric. Trapped air is the fibers provide excellent insulation in cold while allowing airflow to evaporate sweat. It's the lightest windproof baselayer developed for the professional in all of us.

Men's Clothing

S

M

L

XL

XXL

XXXL

(A) Chest (cm)

92

96

100

105

110

115

(B) Waist (cm)

80

84

88

93

95

103

(C) Hips (cm)

94

98

102

107

112

117

(D) Inseam (cm)

82

83

84

85

86

87

Shoe Covers

S

M

L

XL

XXL

Unisex

39 - 40

41 - 42

43 - 44

45 - 46

47- 48

Men's Socks

S / M

L / XL

XXL

Foot Size

35 - 39

40 - 43

44 - 47

Men's Gloves

XS

S

M

L

XL

XXL

(E) Palm Circumference (mm)

< 184

184 - 203

203 - 222

222 - 241

241 - 260

> 260

Fit Guide

1. On the bike your Castelli jersey should fit close to the skin.

2. Off the bike, your Castelli jersey might feel tight across the chest and a little short in front.